Improvement in spark-arresters for locomotives



- anni eine @anni @ifm FRANCIS KEARNEY ANDv LUKE E. TRON-son, OENEWAEK, NEW JERSEY.

Letters Patent N0.'I13,528, dated April l1, 1871.

IMPROVEMENTv IN SPARK-ARRESTERS FOR LOCOMDTIVES. 4'

The Schedule referred to in these Letters Patent and making part of the same.

boiler-'dues' to the smoke-stack is technically known' Uponfthe top of the grating a tube or pipe is fit? ted, extending upward a short distance above the top of the smoke-head into the chimney. A space is left around the top of the pipe between the edges o f4 the aperture' in the top of the smoke-head and the pipe. This space is covered with netting or grat-ingto prevent sparks or coals from passing through into the chimney.

In the accompanying drawing- 'Figure lis aview in section of the front of the `'smokefhead with the 'gratings and pipe i`n position.

Figure 2 isa side v ew of the end of the boiler and of the smoke-head.

A is the boiler.

C, the smoke-head.

D, the grate.

E, the pipe on the top of the grate.

F is the netting closing the aperture between the pipe and the smoke-head;

G is the chimney or smoke-stack; and

I, the exhaust-pipes from the engines.

It will be seen that nothing but smoke and gas can pass the top netting F,and that no coals or danger- 011s sparks can pass into the chimney, they being nrested by the grate D without having received' any impulse from the exhaust-pipes.

The strong draught created by the exhausting steam up the pipe into the chimney brings the coals and sparks to the grating, against which they strike and fall harmless into the space in the smoke-head.

By our arrangement the gases thatn are returned by contrivances that turn sparks downward in the smoke-stack, and sometimes force open the lire-door, have a clear passage to the atmosphere.

We disclaim all draught-regulating contrvances, and also all' gratings with lateral adjustable openings.

What we do claim as our improvement, and desire to secure, is-

rl'.he grate D with longitudinal bars, as and for the purposes speciled-and shown.

' FRANCIS KEARNEY.

LUKE F. TRONSON( Witnesses `WM. M.GooD1NG, EDWARD COLLVER. 

